<AWT Dev> RFR: 8241808 [TESTBUG] The JDK-8039467 bug appeared on macOS

[Sergey Bylokhov]

Hello.
Please review the fix for jdk/client.

Bug: https://bugs.openjdk.java.net/browse/JDK-8241808
Fix: http://cr.openjdk.java.net/~serb/8241808/webrev.00

Please take a look at the previous fix of this test by JDK-8039467
which has some explanation of the problem:
http://hg.openjdk.java.net/jdk9/jdk9/jdk/rev/600f0e7f6dd5

It does not work on macOS because the robot clicks on the "minimize"
button for the "tempFrameToHoldFocus" frame.

In the fix the size of the "tempFrameToHoldFocus" is increased, also all
windows are moved to the center of the screen.

-- 
Best regards, Sergey.